SKU:
Osculati-47.558.88
€ 38,42
1-2 weeks delivery time
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NGK IZFR5J (Osculati 47.558.88) is a premium iridium-tipped marine spark plug with M14 × 1.25 mm thread, 19 mm reach, 16 mm hex, and 1.1 mm factory-set gap. Designed for 4-stroke EFI outboard engines from Yamaha, Honda, Suzuki, Mercury, Tohatsu, Selva, and Mariner. It ensures maximum ignition performance, longevity, and corrosion resistance. No Champion equivalent listed.
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Osculati 47.558.88 – NGK IZFR5J Iridium Marine Spark Plug
The NGK IZFR5J (Osculati 47.558.88) is a high-end iridium spark plug built to meet the rigorous demands of modern marine outboards with electronic fuel injection. Its fine-wire iridium center electrode delivers a more focused spark, improving combustion efficiency, cold start performance, and throttle response. The built-in resistor suppresses EMI, protecting sensitive marine electronics.
Key Features:
- Iridium center electrode – provides superior durability and spark stability
- Heat range 5 – optimal for general-purpose marine operation
- 1.1 mm preset gap – tuned for EFI ignition systems
- Projected tip – enhances ignition efficiency and reduces fouling
- Resistor design – minimizes electromagnetic interference
- Excellent anti-corrosion properties for saltwater environments
Technical Specifications:
Attribute Value Model NGK IZFR5J Osculati Code 47.558.88 Thread Diameter M14 × 1.25 mm Reach 19 mm Hex Size 16 mm Heat Range 5 Gap 1.1 mm Electrode Type Iridium, projected tip Resistor Yes
Manufacturer Compatibility:
- Yamaha
- Honda
- Suzuki
- Mercury
- Tohatsu
- Selva
- Mariner
Cross Reference:
Brand Model NGK IZFR5J Champion –
The NGK IZFR5J is a top-tier spark plug for marine outboards equipped with EFI systems, offering reliable starts, smoother idle, better fuel economy, and extended plug life even in corrosive saltwater environments. It is a preferred option for long-term reliability in high-performance 4-stroke outboards.
Documents
Osculati Catalogue 2025 - page 874 Size: 150,5 Kb -
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